What 'The Free Tier Never Shrinks' Actually Commits Us To
On this page
People search for a free workout app, no paywall, no catch, and land on a hundred products that all say some version of this and mean it right up until the growth meeting. So the sentence on its own is worth nothing. What matters is which specific things are free, whether the commitment is written where you can hold it up later, and whether the free product still works if the paid tier never sells a single subscription.
This post answers those three. It exists because the objection is real and I have heard it in exactly these words: the free tier will get gutted once they have my data. It is a sensible thing to expect. This is what the commitment covers, what it does not cover, and why the most valuable part of Stronkr is the part that costs nothing.
Key takeaways
- The free tier is not a stripped demo. It contains the progression engine, which is the part of Stronkr that does the actual work.
- The commitment that the free tier never shrinks is written in The Promises section on the site, not asserted in a social post that disappears.
- Read literally, “never shrinks” is a commitment about subtraction: the things listed as free stay free. PRO is where depth gets added.
- There is no credit card at signup, which means there is no trial clock and nothing that quietly converts into a charge.
What This Looks Like in Stronkr

You can check every claim in this post in under a minute on the site itself.
- Open the homepage. Under the headline sits the fine-print line: “Free forever core · No credit card · Your data stays yours”. That is the summary version.
- Scroll to The Promises section. This is the fine print in full, and it is where the commitment that the free tier never shrinks is written down. It is a page you can screenshot and quote back at me.
- Open the pricing page from the nav. It is laid out as two columns, Free and PRO.
- Read the Free column. Unlimited routines. The routine generator. RPE auto-progression. 90-day history. Volume and PR tracking. Offline use. Zero dollars, no credit card.
- Read the PRO column. $4.99 a month or $39.99 a year, for full history, personalized deloads, multiple routines, advanced analytics, and first access to the AI coach, which is marked as coming, and is not shipped.
- Compare the two columns on one question: which one decides your next session. Both of them, because auto-progression is in the free column.

What exactly does the free tier contain?
The generator
Roughly two minutes of onboarding, your equipment, your schedule, your experience level, the injury areas you train around, and it builds you a routine. Unlimited routines, on free. Not one routine with an upgrade prompt attached to the second.
The progression engine
This is the part that matters. You rate each set 1 to 10 on RPE after finishing it, and that rating sets the load for your next session: a target increase such as +5 lb, or Deload -10%. That loop is the reason the product exists, and it is free. The mechanism is broken down in how RPE auto-progression works.
The tracking that proves it worked
Automatic PR detection across 1RM, 5RM, volume and estimated 1RM. Volume tracking. Ninety days of history. Ninety days is a real limit and I am not going to pretend it is not one, full history is a PRO line. But ninety days covers a training block, which is the unit most people actually review.
The parts that are not features
Offline use. No credit card. Both languages. These read as small until you are in a basement gym with no signal, or until you remember how many “free” apps want a card before they will show you anything.
A free tier that omits the engine is not a free tier. It is a demo with a longer expiry date.
Why should you believe a promise on a website?
You should not believe it because I said it warmly. You should believe it exactly as far as it is checkable, and that is the whole design of this.
Written beats stated
There is a difference between a founder saying “we will never paywall this” in a thread and a company publishing it as a section of its own site. The thread scrolls away and gets deleted. The site section is indexed, screenshottable, and quotable in a refund argument. Stronkr’s commitment is the second kind. That is not a guarantee of virtue; it is a guarantee of evidence.
A thread gets deleted. A section of a pricing site gets indexed, screenshotted, and quoted back at you in month fourteen.
The business model has to survive the promise
A promise that requires the company to lose money is a promise with a countdown on it. This one does not. PRO is $4.99 a month or $39.99 a year for depth, history beyond ninety days, personalized deloads, advanced analytics, from people who are already getting value out of the free engine and want more of it. That is a model where the free tier is the top of the funnel rather than a cost to be trimmed. The full breakdown is in free vs PRO and what $4.99 buys.
The distribution model helps
Stronkr is a PWA. It installs from the browser, with no app store in the middle taking a cut of every subscription. That removes one of the standard pressures that pushes companies to claw back free features, and it is covered in why Stronkr is not in the app store.
If you want to test the claim rather than read about it, the fastest version is to open the pricing page and check whether auto-progression sits in the free column. It does, or the rest of this post is worthless.
What does the commitment not cover?
This is the part most pricing posts skip, which is why most pricing posts age badly.
It is a promise about subtraction
“Never shrinks” means the things in the free column stay in the free column. It is not a claim that every feature built from here forward will be free. New depth will land in PRO, that is what PRO is for and how the free tier stays funded. If I promised you the opposite I would be writing the exact bait this post is arguing against.
The AI coach is not a PRO feature yet
It is listed on the pricing page as coming. PRO buys first access to it when it exists. It does not buy an AI coach today, because there is not one to buy. Anyone quoting an AI coach as a live Stronkr feature, including any future version of our own marketing, is wrong, and you should treat that as a signal about everything else they claim.
There is no human coach either
Nobody at Stronkr reviews your training. The engine does the job a coach does when they set your next session’s load, which is a genuine and provable claim. It is not the same as a person looking at your sets, and I am not going to blur those two together.
The test of a pricing promise is not how it reads on launch day. It is what gets quietly removed in month fourteen.
What does the free tier have to do for us?
It has to be good enough that you tell someone. That is the entire growth model for a product that launched in early access in July 2026 with no ad budget and no brand recognition. A gutted free tier would not produce that, so gutting it is not a clever monetisation move here, it is a self-inflicted wound.
It also has to answer the fair version of the switching objection. If you already keep years of history in another tracker, the honest comparison is not “ours is better”, it is “ours does a different job”, which is the argument in how Stronkr compares to the trackers you already use.
Go and read the pricing page and The Promises section before you install anything, then start free at stronkr.com. No card, no trial clock, and the engine that decides your next session is in the free column where you can check it.
Try auto-regulated training
Stronkr reads your RPE after every set and adjusts next session’s load for you. No spreadsheets, no guessing.
Start training with StronkrFrequently asked questions
What is actually free, with no time limit?
Unlimited routines, the routine generator, RPE auto-progression, 90 days of history, volume and PR tracking, and offline use. Zero dollars and no credit card to start. That list is the free column on the pricing page, and the progression engine that decides your next session sits inside it.
Is this a free trial that turns into a subscription?
No. There is no card taken at signup, so there is nothing to expire into a charge. The site fine print reads 'Free forever core, no credit card, your data stays yours'. PRO is a separate paid tier you would have to actively choose, not a default you fall into.
What stops you from gutting the free tier next year?
Nothing stops any company from breaking a promise. What differs is whether the promise is written down where customers can point at it. Stronkr's commitment lives in The Promises section on the site, not in a founder's post that scrolls away. A published commitment is a checkable one.
Why is the progression engine free instead of the paid hook?
Because the engine is the argument. Stronkr's whole claim is that a tracker records and an engine prescribes. Putting the prescribing behind a paywall would mean the free product is just another logger, which would make the positioning a bait and the tier a switch.
Does the free tier show ads or sell my data?
The site fine print states 'Your data stays yours' and lists no advertising. Beyond that sentence I am not going to describe data handling I cannot point you at in writing, because inventing privacy detail is exactly the behaviour this post exists to argue against.
The Stronkr Founder
Founder, Stronkr
A lifter with a spreadsheet grudge. Built Stronkr to kill the sheet that ran next to the tracking app, recalculating next session's load by hand. Writes about the parts of programming that actually move the numbers.